FN FN20-100377 Magazine for FN 509C 9mm (10rd)
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FN magazine FN20-100377 for FN 509C 9mm, 10-round capacity, package quantity 1; Black pinky extension baseplate listed as an attribute; SKU FN20-100377.
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Description
Description
Product Overview
The FN FN20-100377 is recorded as a 10-round handgun magazine for the FN 509C in a package quantity of 1. Verified brand: FN; attribute listed: Black Pinky Ext. Baseplate; SKU FN20-100377.
Why this product
This SKU is identified as a handgun magazine for the FN 509C platform with a recorded package qty of 1 (product-270084:f003; product-270084:f005; product-270084:f008). The product record includes an attribute noting a Black Pinky extension baseplate that should be verified for fit and included parts (product-270084:f009).
Key verified specifications
- Brand / Manufacturer: FN (product-270084:f002; product-270084:f006; product-270084:f007)
- Product categories: Accessories; Accessory; Handgun Magazines (product-270084:f003; product-270084:f004; product-270084:f005)
- Package quantity: 1 (product-270084:f008; product-270084:f010)
- Recorded attribute: Black Pinky Ext. Baseplate (product-270084:f009)
- SKU: FN20-100377 (product-270084:f012)
- Availability status in record: instock (product-270084:f013)
Appropriate use cases
- Replacement parts inventory for retail or service centers stocking FN 509C magazines—treat the SKU as a single magazine per package (product-270084:f008).
- Sales listings specifying a black pinky extension baseplate—confirm the baseplate is included and compatible with the intended pistol prior to sale (product-270084:f009).
What customers should know
- Intended platform labeling: the record names FN 509C in the full title; confirm firearm compatibility from manufacturer documentation—compatibility claims beyond the product record are not provided (product-270084:f003; product-270084:f005).
- Package Qty: 1—expect one magazine per SKU (product-270084:f008; product-270084:f010).
- Verify whether the Black Pinky Ext. Baseplate is included in the shipped unit and confirm fit with the specific pistol variant before listing or resale (product-270084:f009).
- SKU and availability: FN20-100377; availability flagged as instock—confirm live stock at time of order (product-270084:f012; product-270084:f013).
Specifications
- Short Stroke Gas Piston Gas System (Rifle Length)
- 18.6″ Barrel Length ( Mid-Weight style, non-fluted)
- 1:8 Twist Rate Rifling

